Since the 20m elements are insulated, would installing a ground strap to an
element near the boom detune things enough to work?
Could an additional "dummy" element or elements be added temporarily for
detuning?
Or, Install back to back gamma rods on the boom (near the mast) to create a
resonant circuit? Sort of like the technique to detune towers on lower
bands.
Probably too much work to set up the 20m boom as a 75m dipole like the old
TH6 loaded boom trick from years ago.
Or, finally, a big old autotuner for the 40m beam, heh-heh!
73,
Gerald K5GW
In a message dated 10/24/2010 1:26:47 A.M. Central Daylight Time,
k5go@cox.net writes:
Thanks for all the responses! Still looking for something I can do,
even temporarily, without taking it down.
Thanks...Stan, K5GO
Sent from Stan's IPhone
On Oct 23, 2010, at 8:04 PM, Stan Stockton <k5go@cox.net> wrote:
> Anyone by chance have an easier to accomplish idea other than one I
> remember being suggested to someone else with a similar problem -
> fishing a wire through a hole near the center of the boom and letting
> it hang out the end. I can watch the SWR on my 40 meter antenna go
> from 1.2/1 to 2.0/1 just by turning the rotatable 40m Yagi or the 20m
> Yagi which is about 175 feet away and 65 feet lower. Boom is 65 feet
> and elements are insulated.
>
> Lesson learned on boom lengths...
>
> I would prefer to fix it with the least amount of work. I can
> probably do the wire thing on one side but not the other due to an
> weight-balance obstruction. Hate to have about 15 feet of wire
> hanging out if the back of the boom.
>
> Thanks...Stan, K5GO
>
> Sent from Stan's IPhone
>
>
> _______________________________________________
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